This Tow Tuff Tandem Wheel Chocks Pair is uniquely designed with scissor-action technology to prevent the rolling and rocking of your tandem wheel trailers and campers. The wheel chocks extend from 1.5 in. to 5.5 in. to provide the stabilization that you need for your tandem wheel trailers and your campers. The one-step lever action is easy to use and the chocks will even prevent movement when unhooking your trailer/camper as they securely lock your trailer/camper into place. The Tow Tuff wheel chock pair is designed to prevent theft of your trailer/camper with the featured padlock hole for use with 5/16 in. or smaller padlock shank. The wheel chock has a corrosion-resistant zinc finish that inhibits rust and ensures the durability of these chocks. This wheel accessory is ideal for campers, trailers, and motor homes. Tow Tuff sells these chocks in a pair so that you can secure your trailers, campers, or motor homes. This wheel chocks pair comes with a 1 year limited manufacturer's parts warranty.